Great Lakes Forecast
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FZUS63 KDTX 171520
GLFSC

Lake St Clair Forecast
National Weather Service Detroit/Pontiac MI
1020 AM EST Fri Jan 17 2020

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...A strong area of high pressure at 30.90 inches
centered over the Great Lakes this morning will push east this
evening as a low pressure system lifts through the central Great
Lakes on Saturday. The low will deepen from 29.60 inches near
southern Lake Michigan Saturday morning to around 29.40 inches
Saturday evening over northern Lake Huron. Gusts to gale-force
will be likely across the central Great Lakes with Gale Warnings
up for Lakes Huron, St. Clair, and Michigan waters of Erie.

LCZ460-172100-
Lake St Clair-
1020 AM EST Fri Jan 17 2020

...GALE WARNING IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT...

.REST OF TODAY...Northeast winds 5 to 10 knots veering to the east
early in the afternoon...then becoming southeast 10 to 15 knots late
in the afternoon. Partly sunny. Waves 2 feet or less.
.TONIGHT...Southeast winds 10 to 15 knots increasing to 15 to 20
knots after midnight. Snow after midnight. Snow may be heavy at
times after midnight. Waves 1 to 3 feet.
.SATURDAY...Southeast winds 20 to 25 knots with gusts to 30 knots
veering to the southwest with gusts to 30 knots early in the
afternoon. Snow in the morning...then light rain and snow in the
afternoon. A chance of drizzle. Waves 2 to 4 feet.
.SATURDAY NIGHT...West winds 20 to 25 knots with gusts to 35
knot gales. Cloudy. A chance of light snow in the evening. A
chance of drizzle in the evening. Waves 2 to 4 feet.
.SUNDAY...West winds 20 to 25 knots with gusts to 30 knots
diminishing to 15 to 20 knots in the afternoon and evening. Mostly
cloudy. Waves 1 to 3 feet.
.MONDAY...Northwest winds 10 to 15 knots. Partly cloudy. Waves 2
feet or less.
.TUESDAY...West winds 10 to 15 knots. Partly cloudy. Waves 2 feet or
less.

$$

IRL

Experimental modernized open lake forecast is available online at
weather.gov/dtx/glftablesc

Graphical marine forecasts are available at weather.gov/greatlakes



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